Answer:
x = 10 , -12
Step-by-step explanation:
Solution:-
- The given quadratic equation is to be solved using the quadratic formula. The general form of a quadratic equation is:
Where, [ a , b and c are constants ]
- The quadratic formula is given as:
- The given equation is:
Where, a = 1 , b = 2 , c = -120
- Solve using quadratic formula:
Answer:
1. The chi-squared statistic = 10.36
The degrees of freedom = 17
The p-value for the test = 0.89
2. The range of the p-value from the Chi squared table = 0.75 < p-value < 0.90
Step-by-step explanation:
1. The Chi squared test is given as follows;
Therefore,
UTI No UTI % Total
Cranberry juice 8 42 84 50
Lactobacillus 19 30 61 49
Control 18 30 60 50
The chi-squared statistic is given as follows;
The chi-squared statistic = 10.36
The degrees of freedom, df = 18 - 1 = 17 since the all of the expected count have a minimum value of 18
With the aid of the calculator we find the p value as p as follows;
The p-value for the test = 0.89
2. The range of the p-value from the Chi squared table is given as follows;
0.75 < p-value < 0.90.